hardware design v2.00

Smart Machine Smart Decision
SIM908_Hardware Design_V2.00 2012.05.07
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14 15 ±3 ±4
15 13 ±3 ±4
16 11 ±5 ±6
17 9 ±5 ±6
18 7 ±5 ±6
19-31 5 ±5 ±6
Table 30: SIM908 DCS 1800 and PCS 1900 conducted RF output power
DCS 1800 and PCS 1900
Tolerance (dB) for conditions
PCL Nominal output power (dBm)
Normal Extreme
29 36 ±2 ±2.5
30 34 ±3 ±4
31 32 ±3 ±4
0 30 ±3 ±4
1 28 ±3 ±4
2 26 ±3 ±4
3 24 ±3 ±4
4 22 ±3 ±4
5 20 ±3 ±4
6 18 ±3 ±4
7 16 ±3 ±4
8 14 ±3 ±4
9 12 ±4 ±5
10 10 ±4 ±5
11 8 ±4 ±5
12 6 ±4 ±5
13 4 ±4 ±5
14 2 ±5 ±6
15-28 0 ±5 ±6
For the module’s output power, the following should be noted:
At GSM900 and GSM850 band, the module is a class 4 device, so the module’s output power should not exceed
33dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal
condition and +/-2.5dB under extreme condition.
At DCS1800 and PCS1900 band, the module is a class 1 device, so the module’s output power should not exceed
30dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal
condition and +/-2.5dB under extreme condition.